Description
The Laars Heating Systems RA2138900 Pressure Relief Valve is a safety control component intended to release excess pressure from closed-loop equipment. Operating at a 125 PSI set point with a 3/4 inch threaded connection, it uses a spring-loaded internal mechanism that opens when pressure rises beyond the calibrated limit, allowing controlled fluid discharge. It is used in boilers, water heaters, and hydronic heating units. Installed on pressurized lines, it maintains regulated pressure conditions and contributes to stable operation in HVAC systems under varying load conditions.
